1434 papers
Hep-Ex explores the fascinating intersection where particle physics meets experimental reality. This field investigates how scientists build massive detectors and accelerate particles to test the fundamental laws of nature, turning abstract theories into measurable data. It is the rigorous process of searching for new particles or forces that could reshape our understanding of the universe, often requiring years of collaboration and engineering.
At Gist.Science, we ensure these discoveries become accessible to everyone. We process every new preprint in this category directly from arXiv, generating both plain-language explanations for curious readers and detailed technical summaries for specialists. Our goal is to bridge the gap between complex experimental results and public understanding without losing scientific nuance.
Below are the latest papers in Hep-Ex, freshly summarized and ready for you to explore.
Using data from the first six detection units of the KM3NeT/ORCA telescope, this study searched for eV-scale sterile neutrinos through atmospheric neutrino oscillations and established new constraints on the mixing elements and that are consistent with the absence of such neutrinos.
This paper reports on the measurement of neutron energy spectra at the Yemi Underground Laboratory using a high-sensitivity spectrometer consisting of proportional counters, providing quantified thermal and fast neutron fluence rates after accounting for internal -backgrounds.
This paper demonstrates that future electron-positron colliders like the FCC-ee can significantly outperform the LHC in detecting displaced signals from heavy Majorana neutrinos, potentially probing Left-Right symmetric model scales in the multi-TeV regime through various production channels and advanced vertexing techniques.
This review summarizes the current status of experimental searches for baryon and lepton number violation, providing a unified framework to interpret these processes within the context of physics beyond the Standard Model.
By analyzing the Lund jet plane of high-energy jets in PbPb collisions compared to pp collisions, this study finds no significant difference in the angular distribution of high- emissions, suggesting that these early parton emissions occur before the jet interacts substantially with the quark-gluon plasma.
Using data from the 532-day DarkSide-50 low-radiation campaign, this paper presents the first search for nuclear ultra-heavy dark matter in a dual-phase liquid argon time projection chamber, establishing new exclusion limits for dark nucleon masses ranging from 10 to 500 .
Using a sample of approximately one billion events collected by the BESIII detector, this paper reports the first observation of the decay and provides its measured branching fractions considering both constructive and destructive interference scenarios.
This paper demonstrates that a light invisible resonance (with a mass of approximately $2.1$ GeV) provides a compelling explanation for the excess observed by Belle II in decays, with both Bayesian and frequentist analyses favoring this new-physics hypothesis over the Standard Model.
By solving the instantaneous Salpeter equation with eight different relativistic wave function representations, this paper identifies the representation as the most accurate for describing charmonium and bottomonium, revealing that vector mesons are mixed states and providing new predictions for the mixing angles and dileptonic decay widths of and .
This paper presents a combined measurement from the Belle and Belle II experiments of the rare leptonic decay , yielding a branching fraction of and providing the most precise search for this process to date.